Washington Revised Code Title 43. State Government--Executive § 43.20B.695. Vendor overpayments--Interest--Exceptions

(1) Except as provided in subsection (4) of this section, vendors shall pay interest on overpayments at the rate of one percent per month or portion thereof. Where partial repayment of an overpayment is made, interest accrues on the remaining balance. Interest will not accrue when the overpayment occurred due to department error.

(2) If the overpayment is discovered by the vendor prior to discovery and notice by the department, the interest shall begin accruing ninety days after the vendor notifies the department of such overpayment.

(3) If the overpayment is discovered by the department prior to discovery and notice by the vendor, the interest shall begin accruing thirty days after the date of notice by the department to the vendor.

(4) This section does not apply to: